EggIndustry * 17
Manure movement a problem
According to experts, the three main sources
of avian influenza virus spread in Mexico are
listed below in order of importance:
1 Transport of hen manure without proper
heat treatment and used as fertilizer on
farmland.
2 Transport of chicken manure without heat
treatment for cattle consumption.
3 The transport of second-cycle live birds
or infected birds, or birds that may still be
spreading the virus through excretions both
in feces and respiratory secretions.
In March 2014, poultry manure transport
was banned in the states of Jalisco and Puebla,
but compliance is not fully followed. Dr. Marquez said, "The authorities cannot be vigilant
for truck farms in outbreak areas 24 hours a
day." There must also be cooperation from
poultry producers. The same applies to road
transportation of vaccinated hens which may
be carrying the virus heading South and Southeast to be molted.
The experience in Mexico
and impact in the US
Dr. Lucio said that American poultry producers
can learn from the Mexican experience of what
kinds of vaccines to use via different vaccination
schedules. Dr. Lucio said, "It took us time to realize that it is necessary to consider an update of the
vaccine seed. Therefore, our vaccination strategy
has not been as effective as it should've been."
Mexico is not alone. There have been cases
of avian influenza outbreaks in Italy, China
and Egypt all controlled with updated seed
vaccines. These concepts are not clearly documented in the recommendations of the OIE. EI
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